octastyle
/ˈɒktəstʌɪl
/adjective
(Of a building or portico) having eight columns at the end or in front.In the process of working with these components, it appears that Bernini flirted with the idea of transforming the octastyle front into a hexastyle front.
noun
An octastyle portico or building.
Origin
Early 18th century: via Latin from Greek oktastulos, from okta- 'eight' + stulos 'pillar'.